Noun-Verb Based Technique of Text Watermarking Using Recursive Decent Semantic Net Parsers

The proposed method of text watermarking by exploits nouns and verbs in a sentence parsed with a grammar parser while using semantic networks. Change is done on the structure of the sentence to generate nouns and verbs whose non terminals, away from the root sentence are used with random numbers to hide the watermark. The modifications, range from active to passive voices or use of linking verbs or using mid-sentence modifiers, terminal modifiers to combining modifiers.